Hello All,

Hoping for some help, please - I am getting the status shown below. I have read through previous posts on this subject but not sure where to turn. I have ordered some new sata cables just in case. Logs attached.

server-diagnostics-20260611-1252.zip

Emulated disk1 is mounted, and SMART report for disk1 looks OK. Syslog indicates connection problem, and also some corruption.

Check connections, both ends, SATA and power, including splitters. Careful with connections of other disks.

Then check filesystem on disk1.

Actually syslog indicates connection problems with another disk also.

2 minutes ago, trurl said:

Check connections, both ends, SATA and power, including splitters

on all disks.

1 minute ago, trurl said:

on all disks.

then post new diagnostics

Thanks for the reply, I think things have gotten worse! 🤣Both 12TB drives are now unmoutable!

server-diagnostics-20260611-1712.zip

Why did you start rebuilding disk1?

Hang on, how have I done that?

You did exactly what the docs say to do if you want to rebuild to the same disk. You unassigned the disk, started the array, stopped the array, reassigned the disk, started the array to begin rebuild.

https://docs.unraid.net/unraid-os/using-unraid-to/manage-storage/array/replacing-disks-in-array/#re-enabling-a-disabled-disk-rebuilding-onto-itself

But since it is unmountable, the result of the rebuild will be unmountable.

Stop the rebuild then post new diagnostics.

Yeah, understood and noted.

Rebuild stopped and here is new diagnostics

server-diagnostics-20260611-1731.zip

Not seeing any connection problems now.

But those first diagnostics had all disks mountable but syslog showed some corruption on disk1.

Now disks 1,2 both corrupt and unmountable.

Do memtest before doing anything else.

Memtest for 1 cycle has passed

This would ideally have been done before starting the revbuild, but it's still the next step; check filesystem for both unmountable disks.

Check filesystem for Disk 1.disk 1.txt

Check filesystem for Disk 2disk 2.txt.

Disk2 doesn't look too bad. Click the FIX button on that one then start the array in normal (not maintenance) mode and post new diagnostics.

Then we can consider your options for disk1.

Drive 2, fixed (hopefully)

Started array, cancelled rebuild for drive 1. Ran diagnostics.

server-diagnostics-20260612-0932.zip

Since the rebuild for disk1 already started, there is not much more you can do now other than trying to also repair that filesystem. But you can unassign the disk first, to repair only the emulated disk only, in case the data on the actual disk can still be used if needed.

ok thank you.

I have repaired the emulated disk and everything looks ok. I have played a selection of random files that were 'missing' before repair in Plex (I know is not a scientistic test).

Am I ok to reassign disk 1 and repair?

server-diagnostics-20260612-1230.zip

Edited June 12Jun 12 by Skaface81
more detail

If contents for emulated disk1 look good, you can reassign the disk to rebuild.

1 hour ago, JorgeB said:

If contents for emulated disk1 look good, you can reassign the disk to rebuild.

See you all in 20 hours 😜

So Disk 1 has now completed rebuild. What should I be looking for now? Or do we think reseating cables was the solution?

server-diagnostics-20260613-1509.zip

Edited June 13Jun 13 by Skaface81
reworded

Rebuild finishes without errors; keep using the server normally; any more issues post new diags.